package chapter04.Demo3;

/**
 * 抽象类
 */
abstract class Student{
    int id;
    String name;
    abstract void setId(int id);
//   abstract int getId();
//  abstract void setName(String name);
// abstract String getName();
    public void study(){
        System.out.println("我的天职是学习");
    }
}
// 1.抽象类可以直接继承抽象类
abstract class SmallStudent extends Student{}
// 2.普通类继承抽象类
class SeniorStudent extends Student{
    void setId(int id){
        this.id = id;
    }
}

public class Demo3 {
    public static void main(String[] args){
        Student stu1 = new SeniorStudent() ;
        stu1.id = 1;
        stu1.name = "小明";
        stu1.study();
    }
}
